Some forms have a lot of required fields and you can't always easily see which you missed when filling out, and the request can't be saved without it. Would like that they get highlighted in some way so it's easy to find what was missed.
I'd also like to add that while it's great that we now can see which required fields have not been filled in, can we also find a way to jump to that field instead of having to scroll for it and find it? Seems like I'm lazy, but some of our forms are quite long.